DW9 Power meter 1. Measure: voltage, current, power, power consumption, power factor, ... Three phase 1.Features of DW9 three phase power meter : - Multi-function coulo-meter. - Measuring object: voltage, current, power, ... AC 250V/3A or DC 30V/3A. - With analog 4~20mA output. - With RS485 communiation interface, modubus RTU protocol. - ... CO.LTD IBEST DW9 Three phase Power meter , With RS485 Interface Power ...